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Re: Why yaboot is NOT for oldworld macs, Oldworld owners please read! (was Re: StarMax and yaboot...)

On Tue, Jun 06, 2000 at 10:08:56AM -0400, Adam C Powell IV wrote:
> Ethan Benson wrote:
> > 2) why you don't WANT to use yaboot on oldworld hardware:
> >         [snip]  first let us go over the main complaints about quik:
> >
> > [snip]
> > b) oldworld macs (with very few exceptions) lack the ability to
> > interface with OF from the console, instead you must use a serial
> > terminal:
> This is wrong.  You just need to set the input device to the keyboard and
> output device to the screen- in fact, this works on my StarMax 3000.
> This

most apple machines lack a video driver for OpenFirmware, so setting
the screen variable does nothing, the 7200 - 8500 machines do not
appear to support OF video (according to tests done by an aquaintence
of mine)  oldworld G3s i think do have a driver.  

> can be done using the "Boot Variables" MacOS utility (which I got with
> LinuxPPC R4 :-); is there a tool shipping with Debian that can set anything
> besides the boot device?

nvsetenv will change any variable.

Usage: nvsetenv variable value

> This ability to use screen/kbd is nice for dual boot since you can choose the
> OS from an OF prompt with out waiting for MacOS to boot for BootX.

if your machine has a OF video driver, as i said most [1] do not.

> Also, if the installer knows the root partition, why can't it figure out the
> boot-device parameter and set it automatically, as part of the "Make Linux
> bootable" step?  I know, "well then, write the patch," okay, someday.  Just a
> wishlist/suggestion, from someone who hasn't actually tried the boot
> floppies, just heard that this step is necessary. :-)

because there is no way to find out that 
/dev/hda3 == /yucky/openfirmware/device/path/ata/@0:0 

this would require kernel modifications becuase the kernel does not
know either, and there is no reliable way to figure it out.  every
hardware is a bit different.  

[1] depending on what oldworld machines are most common, if
starmax/oldworld G3 machines are then perhaps most is not correct, if
however 7200 and 8500 class machines are more common then it is

Ethan Benson

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